Lock.



PATENTED MAR. 5, 1907.

J. G. HORSEY.

LOCK.

APPLIOATION FILED ooms. 1905.

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' @pezzi/07 .Wafzgzemsed/ 110.846.309. PATENTED MAR. 5. 1907.

J. G. HORSBY. LOCK.

APPLICATION FILED 00T.18, 1905.

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JOHN GEORGE HORSEY, OF SIDOUP, ENGLAND.

LOCK.

Specification of Letters Patent.

Patented March 5, 1907.

Application filed October 18, 1905. Serial No. 283.289.

To @ZZ ich/07M t may concern:

Be it known that I, JOHN GEORGE HoRsEY, a subject of the King of Great Britain, residing at Oorcelles, St. Johns Road, Sidcup, Kent, England, have invented certain new and useful Improvements in Locks, of which the following is a specification.

The object of this invention is an improvement connected with locks whereby when the ordinary bolt is shot it is prevented from being forced back by a chisel, a jimmy,` or other appliance.

rThe principal features of this invention are connecting toggle-links to the bolt proper and to a movable section or half-bolt, which iinds a bearing against the lock-casing or projections thereon, or other devices when the bolt is fully shot.

My invention will be clearly understood from the following description, aided by the accompanying drawings, in which- Figure l is an interior view of a lock, showing the two half-bolts and the toggle-links in the unlocked condition. Fig. 2 is a similar view in the locked condition. Fig. 3 is a similar view to Fig. l with the addition of the sliding plate. Fig. 4 is a similar view to Fig. 3, but in the locked condition and with the addition of the operating-lever. Fig. 5 is a similar view to Fig. 4, but in the unlocked condition. Fig. 6 is a view of a lock in the locked condition and showing the two half-bolts, sliding plate, operating-lever, and tumbler.

According to my invention I form the bolt in two parts or portions A B, guided by slots C and pins D, the two parts or portions A B being connected by toggle-links E, which are operated by a special-shaped lever F, one end of which is connected to the center pin G of the toggle-links E and the other end connected to a sliding plate H in suoli manner that when the special-shaped lever F is operated by the key the key imparts a crablike action to the lever F to open out the toggle-links E to a straight line for shooting the bolt A or to contract the toggles E to draw back the bolt A. The toggles E may have a circular or other shoulder I for engaging a projecting portion of the bolt A. By this arrangement the key does not touch the bolt A itself. A number of spring-controlled tumblers J, preferably four, are provided with slots and gates, in which the center pin G of the toggle-links E engage in such manner as to lock the toggle-links in a straight line when the bolt A is shot after the key has actuated the slotted tumblers.

The operating-lever F is constructed of claw shape and is provided with a slot K for engaging a pin L to keep the lever F in the proper position, said pin L, together with pin M, having a position in slots N of the sliding plate H to insure proper movement of the sliding plate.

In action the key is inserted in the lock and over the pin P, which also acts as a guide to the bolt A, and on turning the key to lock or shoot the bolt to the locked position the key will first act upon tumblers J and place them in position for the gates to be in register 1n the well-known manner, and whilev holding the tumblers J in register the key will act on the edge Q of the operating-lever F and force over the operating-lever, the pin G riding along the slots of the tumblers J and drawing the toggle-links to a straight position, as at Fig. 6, the other gates of the tumblers engaging the pin G to hold the toggle-links lirmly in the straight position, the toggle-links during the movement projecting the bolt A into locked position. A reverse movement of the key will operate the tumblers J in the same manner and acting against the face R of the lever F will contract the toggles and effect a reverse movement of the bolt A and pin G.

The lever F is pivoted at S to the sliding plate H and the movements of the sliding plate and the half-bolt B take place during the operation of the key and allow of perfect freedom of movement of the pin G and toggle-links, which would not otherwise be the case.

In some cases the sliding plate H can be dispensed with and the pin S located in a slot of the casing T.

What I desire to secure by Letters Patent is 1. In a lock, the combination with a bolt comprising a plurality of members and toggle-connecting means, of a sliding plate, and a slotted operating-lever connected to said plate and toggle connections.

2. In a lock, the combination with a bolt comprising a plurality of members and toggle-connecting means, of a sliding plate, and an operating-lever having key-engaging means connected to said plate and toggle connections.

3. In a lock, the combination of a bolt comprising a plurality of members having in- IOO IIO

terfitting projections, and connecting means I for said members comprising pivot-al links adapted to be itted into alinement with eaeh other when the bolt is actuated.

4. In a look, the combinationv of a bolt comprising a plurality of meml; ers having interl'itting projections and guide means, and connecting means for said mem; ers including pivotal links adapted to be shifted into alinement with each other when the bolt is in a looked position.

5. In a look, the Combination of a bolt comprising a movable member and a sta` tionary member7 toggle-Connecting links, said links being in alinement with respeet to eaeh other when the bolt is in thrown position, and a slide-plate in operative relation with said bolt and toggle connection.

6. In a look, the combination of a bolt comprising a plurality of meml ers and toggie-connecting means including pivotal links adapted to be shifted into alinement with each other when the bolt is in a looked posi- 7. In a lock, the combination with abolt comprising a plurality of memlt ers and toggie-connecting means, of a sliding plate, and a slotted operating-lever having key-engaging means connected to said plate and toggle connection.

8. The combination with a bolt comprising a plurality of memb ers, toggle-Connecting means for said members, a sliding plate carried by one of said memb ers and having pivotally mounted thereon an operating-lever, and a plurality of spring-controlled tumblers in operative relation therewith.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN GEORGE HORSEY. I/Vitnesses Riel-IARD CORE GARDNER, HENRY MARLOW. 

